I've changed spark plugs, wires, fuel filter, air filter, MAF sensor, been through a couple tanks of gas.
Usually when starting hot or cold it idles rough for a few minutes then runs fine. Going up hills, or running on freeway it will without reason run rough and even stall. Eventually it will begin running fine and get me home. Check engine light has been on for a couple of months now. Codes say it runs lean, and was told to change out the MAF sensor, brand new aftermarket MAF, no change in performance. I suspent a weak fuel pump due to problems uphill or high RPMs on freeway but really don't know. Any suggestions would be much appreciated! I'll get a code reader and give more specific info.
Usually when starting hot or cold it idles rough for a few minutes then runs fine. Going up hills, or running on freeway it will without reason run rough and even stall. Eventually it will begin running fine and get me home. Check engine light has been on for a couple of months now. Codes say it runs lean, and was told to change out the MAF sensor, brand new aftermarket MAF, no change in performance. I suspent a weak fuel pump due to problems uphill or high RPMs on freeway but really don't know. Any suggestions would be much appreciated! I'll get a code reader and give more specific info.
Jun 1, 2008 at 11:37 PM